can this be done. my heater core is bad can i bypass it by routing the line through the ac core in the fire wall. i dont have ac. i got rid of it a while ago. the lines are just hanging out there. it should work right?

 

No, it should not work. The A/C evaporator is an entirely different animal than the heater core. The lines aren't made to handle antifreeze. I would see trouble in the making.

I think the heater core is situated by your accelerator pedal. It shouldn't be too hard to replace if it's leaking.

 

you dont need a heater core at all, just route the hose back into the intake manifold